. >> on "meet the press," david gregory asked the nra's chief spokesman, why not bring back the ten-year ban that expired in 2004. >> i don't believe that's going to make one difference. there are so many different ways to evade that. you had that for ten years. it was on the books. columbine occurred right in the middle of it. it didn't make any difference. >> the prospect of a ban on magazines or the kind of guns called assault weapons have people in atlanta standing in line for more than an hour at a gun show. customers at this shooting ranging in arizona say those weapons are widely used by sportsmen. >> guys that shoot clays, guys that shoot trophy animals, you know, a lot of them are done with semi-automatic hunting rifles. >> a group representing mothers says it will fight hard for a ban. >> 80 million moms are just not going to let the 4 million members of the nra drive the discussion on this. >> both sides are prepared for the biggest battle over gun control in 20 years. pete williams, nbc news, washington. >> what is open today if you need to get out of the house? and an epic f